MA

Marina
Arriola

founded nali ai/ml · j.p. morgan cs + intl relations · stanford '27
↓ scroll

About Me

Born and raised in San José, California. Family from Mexico. Studying computer science + international relations at Stanford. I founded NaLi because ~70% of Peru works informally, pays their bills, runs real businesses, and banks can't see any of it. That's a systems problem, and systems problems are fixable. We built it, shipped it, and proved it on a live cohort.

Otherwise: intramural volleyball captain, Ballet Folklórico dancer, founder of Stanford's Migrant Farmworker Drive.

NaLi

Underwriting infrastructure for informal SMEs · 2025–26

Alt-data underwriting for LATAM lenders. Ingestion connectors normalized Yape/Plin flows, bureau pulls, and device/psychometric signals into a feature store. Linear regression with signed coefficients scored borrowers on a 300–900 scale, served via a decision API: approve/decline, limit, term, reason codes. Evaluated on AUC/Gini against a live Lima cohort. Founder & CEO.

ingest feature store score decision api
100%
repayment · live Lima cohort
$20K
pilot capital
Pear FFC
founder cohort, spring '26
NaLi score · live300–900
0 TIER
wallet flow
repayment
bills & rent
trust signals
real behavior in → one legible decision out. every factor traceable.
Built on & alongside:
Pear VCEquifaxYapeCredoLabLenddoEFL

Reimagining
Post-Trade Settlement

AI/ML Intern · J.P. Morgan's Commercial & Investment Bank

Post-trade teams manage settlement data across internal systems, counterparties, custodians, and documents. When records are incomplete or inconsistent, ops teams must investigate, resolve, and track the trade through settlement. I'm exploring how agentic workflows can consolidate information, detect mismatches, classify exceptions, and recommend next steps, with humans in control of final decisions.

6
workflow stages
HITL
decision support, human final call
E2E
traceability
01
Intake
collects trade records, settlement instructions, messages & documents
02
Standardization
structures key fields & aligns information across sources
03
Matching
compares internal, counterparty & custodian records
04
Triage
identifies breaks, missing data & likely causes of failure
05
Resolution Support
recommends next actions, drafts outreach, routes for review
06
Monitoring
tracks status, approvals & outcomes through settlement
Also

Experience

A few other things I've done, briefly.

CIB Sophomore Fellow · J.P. Morgan Chase Summer 2025
Rotated across Product Development, Sales & Trading Services, and Data Solutions (Fusion); pitched a cross-sector automation project to senior leadership.
Alumni Project Management Intern · Stanford Alumni Center Jan 2025 – present
Automated alumni databases across 10+ industries; coordinated outreach for regional events with 1,000+ attendees.
Venture Capital Researcher · Westbound Equity Partners Summer 2024
Analyzed the global AI product market (healthcare, education, housing, climate tech) to guide firmwide investment strategy.
Campaign Organizer · Sam Liccardo for Congress & Cindy Chavez for Mayor 2022 – 24
Recruited and mobilized thousands of volunteers and voters across two San José campaigns.
Judicial Intern · Santa Clara County Superior Court Summer 2021
Helped organize a statewide conference on juvenile justice reform for 100+ legal officials.
Policy Intern · CA Office of Youth & Community Restoration Summer 2022
Reviewed legislative reforms and case files across ~60 county juvenile justice systems.

Published in San José Spotlight: "Arriola: Cindy Chavez Versus the Concrete Ceiling" (Feb 2023)

Contact Me